EVA injection-molded integrated hat and injection mold thereof

Abstract

The application discloses a cap integrally formed by EVA injection molding and an injection mold thereof. The cap integrally formed by EVA material comprises a headband part, a connecting part and a brim part, the connecting part is arranged between the headband part and the brim part, the thickness of the headband part gradually decreases with the distance from the connecting part, the thickness of the brim part gradually decreases with the distance from the connecting part, and the thickness of the connecting part is greater than the thickness of the headband part and the brim part. Through the integrally formed setting of the cap, the thickness of the headband part gradually increases from the edge to the connecting part, and the thickness of the brim part also gradually increases from the edge to the connecting part, so that the supporting force of the cap is improved, the stability of the cap structure is better, and the overall weight of the cap can be controlled by reducing the edge thickness. In addition, the cap is made of EVA material, so that the performance defects of the cap, such as insufficient flexibility, easy deformation and poor resilience, can be improved, and the cleaning of the cap is facilitated.

Description

Technical Field

[0001] This application relates to the field of hat molding technology, specifically to an EVA injection molded hat and its injection mold. Background Technology

[0002] Existing hats are made by combining different types of fabrics with foam or boning materials, which has the following drawbacks: the hat's support relies on the combination of multiple layers of materials, and the composite sewing process makes the seams prone to cracking, resulting in poor structural stability; controlling the thickness of different parts of the hat requires stacking different materials, which increases the weight; hats made of composite materials have performance defects such as insufficient flexibility, easy deformation, and poor resilience; and hats made of composite materials are not easy to clean. Utility Model Content

[0003] Therefore, this application provides an EVA injection molded hat and its injection mold to solve the technical problems of poor stability, insufficient flexibility, poor resilience and difficulty in cleaning of the hat structure in the prior art.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] On the one hand, an EVA injection molded one-piece hat is provided. The hat is made of EVA material and includes a headband, a connecting part and a brim that are integrally molded. The connecting part is disposed between the headband and the brim. The inner side of the connecting part is provided with a raised curved surface. The two ends of the raised curved surface are respectively connected to one end of the inner side of the headband and one end of the inner side of the brim.

[0006] The thickness of the headband gradually decreases as the distance from the connecting part increases, the thickness of the brim gradually decreases as the distance from the connecting part increases, and the thickness of the connecting part is greater than the thickness of the headband and the brim.

[0007] Optionally, the hat includes straps disposed at both ends of the headband.

[0008] Optionally, the hat includes a texture, which is integrally formed on the hat.

[0009] On the other hand, an injection mold for an EVA injection molded hat is provided, characterized in that the injection mold includes a mold cavity for making the aforementioned EVA injection molded hat, the mold cavity including a through headband cavity, a connecting cavity and a brim cavity, the two ends of the connecting cavity being connected to the headband cavity and the brim cavity respectively, the bottom surface of the connecting cavity being a concave curved surface, the two ends of the concave curved surface being connected to one end of the bottom surface of the headband cavity and one end of the bottom surface of the brim cavity respectively;

[0010] The longitudinal distance between the top surface and the bottom surface of the headband cavity gradually decreases as the distance to the connecting cavity increases. The longitudinal distance between the top surface and the bottom surface of the brim cavity gradually decreases as the distance to the connecting cavity increases. The longitudinal distance between the top surface and the bottom surface of the connecting cavity is greater than the longitudinal distance between the top surface and the bottom surface of the headband and the brim.

[0011] Optionally, the injection mold includes an injection channel, which is connected to the mold cavity.

[0012] Further optionally, the injection mold includes a first half mold and a second half mold, the first half mold and the second half mold being engaged to form the mold cavity and the injection channel.

[0013] Alternatively, the injection mold may include a protruding pillar, with independent mold cavities provided on both sides of the protruding pillar.

[0014] Compared with the prior art, this application has at least the following beneficial effects:

[0015] An EVA injection-molded one-piece hat includes a headband, a connecting portion, and a brim, all integrally molded. The connecting portion is located between the headband and the brim. The thickness of the headband gradually decreases with increasing distance from the connecting portion, as does the thickness of the brim. The connecting portion is thicker than both the headband and the brim. This one-piece molding design increases the thickness of both the headband and brim from their edges to the connecting portion, thereby improving the hat's support and structural stability. Reducing the edge thickness also helps control the overall weight of the hat. Furthermore, the use of EVA material improves upon shortcomings such as insufficient flexibility, easy deformation, and poor resilience, while also facilitating cleaning. Attached Figure Description

[0016] To more intuitively illustrate the prior art and this application, exemplary drawings are provided below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing this application; for example, based on the technical concept disclosed in this application and the exemplary drawings, those skilled in the art are able to easily make conventional adjustments or further optimizations to the addition / reduction / classification, specific shapes, positional relationships, connection methods, size ratios, etc. of certain units (components).

[0017] Figure 1 A schematic diagram of the structure of an EVA injection-molded one-piece hat provided in an embodiment of this application;

[0018] Figure 2 Provided for the embodiments of this application Figure 1 Cross-sectional view of surface AA;

[0019] Figure 3 A transparent structural schematic diagram of an injection mold for an EVA one-piece injection molded hat, provided as an embodiment of this application;

[0020] Figure 4 A partial cross-sectional view of an injection mold for an EVA one-piece injection molded hat, provided for an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of the split structure of an injection mold for an EVA one-piece injection molded hat, provided as an embodiment of this application.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Headband; 2. Connecting part; 3. Hat brim; 4. Raised curved surface; 5. Headband cavity; 6. Connecting cavity; 7. Hat brim cavity; 8. Concave curved surface; 9. First half mold; 10. Second half mold; 11. Mold cavity; 12. Injection channel; 13. Raised column. Detailed Implementation

[0024] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] refer to Figure 1 , Figure 2 As shown, this embodiment provides a hat made of EVA injection molding in one piece, including a headband 1, a connecting part 2, and a brim 3, all integrally molded. The connecting part 2 is disposed between the headband 1 and the brim 3. A raised curved surface 4 is provided on the inner side of the connecting part 2, with both ends of the raised curved surface 4 connecting to one end of the inner side of the headband 1 and one end of the inner side of the brim 3, respectively. The headband 1 has a semi-circular cross-section, allowing it to be worn on the user's forehead. The curvature of the brim 3's cross-section is greater than that of the headband 1. The connecting part 2 allows for a smooth transition between the brim 3 and the headband 1.

[0026] The thickness of the headband 1 gradually decreases as the distance from the connecting part 2 increases, that is, the thickness of the headband 1 gradually increases from the end away from the brim 3 towards the connecting part 2; the thickness of the brim 3 gradually decreases as the distance from the connecting part 2 increases, that is, the thickness of the brim 3 gradually increases from the end away from the headband 1 towards the connecting part 2; the thickness of the connecting part 2 is greater than the thickness of the headband 1 and the brim 3.

[0027] Through the one-piece molding design of the hat, the thickness of the headband 1 gradually increases from the edge to the connecting part 2, and the thickness of the brim 3 also gradually increases from the edge to the connecting part 2. The connecting part 2 is located between the headband 1 and the brim 3, and its thickness is the thickest. This improves the overall support of the hat, making the hat structure more stable. Moreover, reducing the edge thickness can also control the overall weight of the hat. In addition, the hat is made of EVA material, which can improve the performance defects of hats such as insufficient flexibility, easy deformation, and poor resilience, while also making the hat easier to clean.

[0028] When worn, the headband 1 is placed on the user's head, while the raised curved surface 4 on the inner side of the connecting part 2 contacts the user's forehead, which can securely hold the hat while also improving the user's comfort when wearing the hat.

[0029] The hat includes straps, which are located at both ends of the headband 1. Specifically, through holes can be provided at both ends of the headband 1. One end of each of the two straps is tied to the through hole. When worn, the other ends of the two straps are connected and tied behind the user's head to secure the hat.

[0030] The hat can be patterned, with the pattern integrally molded onto the hat, either on the outside or on the inside, to enhance its decorative appeal. Furthermore, the integrated molding of the pattern with the hat prevents it from peeling off during washing.

[0031] refer to Figures 3-5 As shown, on the other hand, this embodiment provides an injection mold for an EVA injection molded hat, the injection mold including a mold cavity 11 for making an EVA injection molded hat.

[0032] The mold cavity 11 includes a through headband cavity 5, a connecting cavity 6, and a brim cavity 7. The two ends of the connecting cavity 6 are connected to the headband cavity 5 and the brim cavity 7, respectively. The bottom surface of the connecting cavity 6 is a concave curved surface 8, and the two ends of the concave curved surface 8 are connected to one end of the bottom surface of the headband cavity 5 and one end of the bottom surface of the brim cavity 7, respectively. The longitudinal distance between the top surface and the bottom surface of the headband cavity 5 gradually decreases as the distance from the connecting cavity 6 increases; that is, the longitudinal distance between the top surface and the bottom surface of the headband cavity 5 along the direction away from the brim cavity 7 to the connecting cavity 6 gradually increases. The headband cavity 5 can be used to make the thickness of the headband part 1 of the hat, which varies with the thickness of the connecting part 2. The distance between the top and bottom surfaces of the brim cavity 7 increases and the thickness gradually decreases; the longitudinal distance between the top and bottom surfaces of the brim cavity 7 and the connecting cavity 6 increases, that is, the longitudinal distance between the top and bottom surfaces of the brim cavity 7 along the direction away from the headband cavity 5 to the connecting cavity 6 gradually increases, and the thickness of the brim portion 3 of the hat that can be made from the brim cavity 7 gradually decreases as the distance between it and the connecting portion 2 increases; the longitudinal distance between the top and bottom surfaces of the connecting cavity 6 is greater than the longitudinal distance between the top and bottom surfaces of the headband portion 1 and the brim portion 3, and the thickness of the connecting portion 2 of the hat that can be made from the connecting cavity 6 is greater than the thickness of the headband portion 1 and the brim portion 3.

[0033] The injection mold includes an injection channel 12, which is connected to the mold cavity 11. EVA material is injected into the mold cavity 11 through the injection channel 12, which can produce a one-piece molded hat.

[0034] In a preferred embodiment, the injection mold includes a first half-mold 9 and a second half-mold 10, which are engaged to form a closed mold cavity 11 and an injection channel 12. Specifically, the bottom surface of the lower mold cavity formed by the first half-mold 9 corresponds to the inner side of the hat, and the top surface of the upper mold cavity formed by the second half-mold 10 corresponds to the outer side of the hat. The edges of the lower and upper mold cavities are fitted together to form a complete closed mold cavity 11. Different textures can be provided on the top surface of the upper mold cavity formed by the second half-mold 10, so that the textures can be presented on the outer side of the hat.

[0035] In a preferred embodiment, an injection mold can simultaneously provide two independent mold cavities 11. Specifically, a protruding post 13 is provided in the middle of the first half-mold 9, and independent lower mold cavities are respectively provided on both sides of the protruding post 13. A groove adapted to the protruding post 13 is correspondingly provided on the second half-mold 10 so that the protruding post 13 engages with the groove, and an upper mold cavity adapted to the lower mold cavity is also provided. The injection channel 12 is connected to both mold cavities 11 respectively. In this way, one mold can produce two caps simultaneously, thereby improving production efficiency.

[0036] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

Claims

1. An EVA injection-molded one-piece hat, characterized by, The hat is made of EVA material and includes a headband (1), a connecting part (2) and a brim (3) that are integrally formed. The connecting part (2) is located between the headband (1) and the brim (3). The inner side of the connecting part (2) is provided with a raised curved surface (4). The two ends of the raised curved surface (4) are respectively connected to one end of the inner side of the headband (1) and one end of the inner side of the brim (3). The thickness of the headband (1) gradually decreases as the distance from the connecting part (2) increases, and the thickness of the brim (3) gradually decreases as the distance from the connecting part (2) increases. The thickness of the connecting part (2) is greater than the thickness of the headband (1) and the brim (3).

2. The EVA injection-molded integrated hat according to claim 1, wherein, The hat includes straps that are located at both ends of the headband (1).

3. The EVA injection-molded integrated hat according to claim 1, wherein, The hat includes a texture, which is integrally formed on the hat.

4. An injection mold for a one-piece EVA injection molded hat, characterized in that, The injection mold includes a cavity (11) for making a hat made of EVA injection molding as described in any one of claims 1-3. The cavity (11) includes a through headband cavity (5), a connecting cavity (6) and a brim cavity (7). The two ends of the connecting cavity (6) are respectively connected to the headband cavity (5) and the brim cavity (7). The bottom surface of the connecting cavity (6) is a concave curved surface (8). The two ends of the concave curved surface (8) are respectively connected to one end of the bottom surface of the headband cavity (5) and one end of the bottom surface of the brim cavity (7). The longitudinal distance between the top surface and the bottom surface of the headband cavity (5) gradually decreases as the distance to the connecting cavity (6) increases. The longitudinal distance between the top surface and the bottom surface of the brim cavity (7) gradually decreases as the distance to the connecting cavity (6) increases. The longitudinal distance between the top surface and the bottom surface of the connecting cavity (6) is greater than the longitudinal distance between the top surface and the bottom surface of the headband part (1) and the brim part (3).

5. The injection mold for an EVA one-piece injection molded hat according to claim 4, characterized in that, The injection mold includes an injection channel (12), which is connected to the mold cavity (11).

6. The injection mold for an EVA one-piece injection molded hat according to claim 5, characterized in that, The injection mold includes a first half mold (9) and a second half mold (10), which are fastened together to form the mold cavity (11) and the injection channel (12).

7. The injection mold for an EVA one-piece injection molded hat according to claim 6, characterized in that, The injection mold includes a protruding column (13), and independent mold cavities (11) are respectively provided on both sides of the protruding column (13).

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